homeland security

劍橋詞典

[ 不可數(shù)或單數(shù)名詞：沒有復數(shù)形式的名詞 ]
activities and organizations whose purpose is to protect the US from attacks within the country by terrorists
（美國）國土安全（活動或機構）
?Homeland Security

the department of the US government that deals with homeland security
（美國）國土安全部 返回 homeland security